webrtc/rtc_base/system/unused.h
Byoungchan Lee 83ceb90fdf Fix -Wunused-but-set-variable
Bug: chromium:1203071
Change-Id: I338bd31ab0e74751f2c0abd5d441ea03ac33dead
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/237880
Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org>
Reviewed-by: Harald Alvestrand <hta@webrtc.org>
Commit-Queue: Mirko Bonadei <mbonadei@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#35350}
2021-11-16 10:30:30 +00:00

28 lines
949 B
C

/*
* Copyright (c) 2018 The WebRTC project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#ifndef RTC_BASE_SYSTEM_UNUSED_H_
#define RTC_BASE_SYSTEM_UNUSED_H_
// Prevent the compiler from warning about an unused variable. For example:
// int result = DoSomething();
// RTC_DCHECK(result == 17);
// RTC_UNUSED(result);
// Note: In most cases it is better to remove the unused variable rather than
// suppressing the compiler warning.
#ifndef RTC_UNUSED
#ifdef __cplusplus
#define RTC_UNUSED(x) static_cast<void>(x)
#else
#define RTC_UNUSED(x) (void)(x)
#endif
#endif // RTC_UNUSED
#endif // RTC_BASE_SYSTEM_UNUSED_H_